45491130 has 96 divisors (see below), whose sum is σ = 128044800. Its totient is φ = 11166336.

The previous prime is 45491101. The next prime is 45491137. The reversal of 45491130 is 3119454.

45491130 is a `hidden beast` number, since 4 + 549 + 113 + 0 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 45491094 and 45491103.

It is not an unprimeable number, because it can be changed into a prime (45491137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62911 + ... + 63629.

It is an arithmetic number, because the mean of its divisors is an integer number (1333800).

Almost surely, 2^45491130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45491130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64022400).

45491130 is an abundant number, since it is smaller than the sum of its proper divisors (82553670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45491130 is a wasteful number, since it uses less digits than its factorization.

45491130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 45491130 is about 6744.7112614255. The cubic root of 45491130 is about 356.9786490067.

The spelling of 45491130 in words is "forty-five million, four hundred ninety-one thousand, one hundred thirty".